<template>
	<view class="cart-container" v-if="cart.length!==0">
    <my-address></my-address>
    <!-- 商品列表标题区域 -->
		<view class="cart-title">
		  <!-- 左侧图片 -->
      <uni-icons type="shop" size="17"></uni-icons>
      <!-- 右侧文本 -->
      <text class="cart-title-text">购物车</text>
		</view>
    
    <!-- 循环渲染购物车当中的商品信息 -->
   <uni-swipe-action>
      <block v-for="(goods,i) in cart" :key="i">
      <uni-swipe-action-item :options="options" @click="swipeItemClickHandler(goods)">
           <my-goods :goods="goods" :showRadio="true" @radio-change="radioChangeHandler" :show-num="true" @num-change="numberChangeHandler"></my-goods> 
     </uni-swipe-action-item>
       </block>
   </uni-swipe-action>
  
  <!-- 自定义组件 -->
  <my-settle></my-settle>
	</view>
  
  <!-- 空白购物车区域 -->
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也</text>
  </view>
</template>
 
<script>
  import badegMix from '@/mixins/tabbar-badge.js'
  import {mapState,mapMutations} from 'vuex'
  
  // import {mapGetters} from 'vuex'
	export default { 
    mixins:[badegMix], 
    computed:{
      ...mapState('m_cart',['cart'])
    },
    // computed:{
    //   ...mapGetters('m_cart',['total'])
    // },
    // onShow() {
    //   // 页面刚展示的时候 设置数字徽标
    //   this.setBadge()
    // }, 
   
		data() {
			return {
				options:[{
          text:'删除',
          style:{
            backgroundColor: '#C00000' 
          }
        }]
			};
		},
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']), 
      radioChangeHandler(e){
        this.updateGoodsState(e) 
      },
      numberChangeHandler(e){
        this.updateGoodsCount(e) 
      }
    },
    swipeItemClickHandler(goods){
      this.removeGoodsById(goods.goods_id)
    }
    // methods:{
    //   setBadge(){
    //     //为购物车设置徽标
    //     uni.setTabBarBadge({
    //       index:2,
    //       text:this.total+'' 
    //     })
    //   }
    // }
	}
</script>

<style lang="scss">
.cart-title{
  height: 40px;
  display: flex;
  align-items: center;
  padding-right: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text{
    font-size: 14px;
    margin-left: 10px;
  }
}
.cart-container{
  padding-bottom: 50px;
}
.empty-cart{
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;
  .empty-img{
    width: 90px;
    height: 90px;
  }
  .tip-text{
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
